Generalized Pomeranchuk instabilities in graphene
We study the presence of Pomeranchuk instabilities induced by interactions on a Fermi-liquid description of a graphene layer. Using a recently developed generalization of the Pomeranchuk method, we present a phase diagram in the space of fillings versus on-site and nearest-neighbors interactions. We...
Guardado en:
Autores principales: | , , |
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Formato: | Articulo |
Lenguaje: | Inglés |
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2009
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/126373 |
Aporte de: |
id |
I19-R120-10915-126373 |
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institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Exactas Física Pomeranchuk instabilities graphene phase diagram Fermi-liquid |
spellingShingle |
Ciencias Exactas Física Pomeranchuk instabilities graphene phase diagram Fermi-liquid Lamas, Carlos Alberto Cabra, Daniel Carlos Grandi, Nicolás Esteban Generalized Pomeranchuk instabilities in graphene |
topic_facet |
Ciencias Exactas Física Pomeranchuk instabilities graphene phase diagram Fermi-liquid |
description |
We study the presence of Pomeranchuk instabilities induced by interactions on a Fermi-liquid description of a graphene layer. Using a recently developed generalization of the Pomeranchuk method, we present a phase diagram in the space of fillings versus on-site and nearest-neighbors interactions. We find that for both interactions being repulsive, an instability region exists near the Van Hove filling, in agreement with earlier theoretical work. In contrast, near-half filling, the Fermi-liquid behavior appears to be stable, in agreement with theoretical results and experimental findings using angle-resolved photoemission spectroscopy. The method allows for a description of the phase diagram for arbitrary filling. |
format |
Articulo Articulo |
author |
Lamas, Carlos Alberto Cabra, Daniel Carlos Grandi, Nicolás Esteban |
author_facet |
Lamas, Carlos Alberto Cabra, Daniel Carlos Grandi, Nicolás Esteban |
author_sort |
Lamas, Carlos Alberto |
title |
Generalized Pomeranchuk instabilities in graphene |
title_short |
Generalized Pomeranchuk instabilities in graphene |
title_full |
Generalized Pomeranchuk instabilities in graphene |
title_fullStr |
Generalized Pomeranchuk instabilities in graphene |
title_full_unstemmed |
Generalized Pomeranchuk instabilities in graphene |
title_sort |
generalized pomeranchuk instabilities in graphene |
publishDate |
2009 |
url |
http://sedici.unlp.edu.ar/handle/10915/126373 |
work_keys_str_mv |
AT lamascarlosalberto generalizedpomeranchukinstabilitiesingraphene AT cabradanielcarlos generalizedpomeranchukinstabilitiesingraphene AT grandinicolasesteban generalizedpomeranchukinstabilitiesingraphene |
bdutipo_str |
Repositorios |
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1764820450540519425 |